
<p><b>syntax:</b> <i>proxy_cache_use_stale [error|timeout|updating|invalid_header|http_500|http_502|http_503|http_504|http_404|off] [...];</i>
</p><p><b>default:</b> <i>proxy_cache_use_stale off;</i>
</p><p><b>context:</b> <i>http, server, location</i>
</p><p>TODO: Description.
</p><p>The parameters for this directive is like for proxy_next_upstream one.
</p>
<br><i>Module: NginxHttpProxyModule</i>